.formContainer {
  width: 600px;
  height: 400px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: darkgray;
  text-align: center;
  border-radius: 10px;
}
h1 {
  font-size: 50px;
  font-weight: 600;
  margin: 30px 0;
}
form {
  width: 100%;
  border-top: 1px seashell solid;
  padding: 40px 0;
}
form .nickname,
form .password,
form .email {
  box-sizing: border-box;
  box-sizing: content-box;
  margin-bottom: 20px;
}
form .nickname label,
form .password label,
form .email label {
  font-size: 20px;
  padding: 0 20px;
}
form .nickname input,
form .password input,
form .email input {
  width: 300px;
  height: 30px;
  font-size: 20px;
}
form button {
  width: 100px;
  height: 40px;
  border-radius: 20px;
  border: none;
  font-size: 18px;
}
form button:hover {
  cursor: pointer;
  color: #666161;
  background-color: seashell;
}
